Report on reliability of electric equipment in industrial plants

A knowledge of electric equipment reliability is required in the economic design of power distribution systems. An AIEE sponsored survey was undertaken in 1959 to collect reliability data in industrial plants. Responses were received from 33 companies, covering 85 plants in 5 industries. Survey results on 27 equipment items are shown in 46 tables. For each industry and for all data received, these show average failure rates by cause, and average down time per failure.